On Sat, Jan 23, 2016 at 12:24:38AM +0000, Bob Moore wrote:
Hi,
I'm new to qemu/seabios and am in the process of developing an option rom for a pcie device. I want to use seabios as a driver for debugging this code. I see documentation that says I can put my option rom into a file with name of the form pciVVVV,DDDD.rom to contain my compiled/linked code that will be used when the device having that VendorID/DeviceId is processed in init_pcirom(). The lookup_hardcode() call looks for this file on a list via romfile_find(). The list looks to be populated from FW_CFG_FILE_DIR but I can't seem to find where the entries on this list actually come from. Is there a specific directory in the qemu project that is configured to contain these entries? Or maybe these are just configured in a file someplace?
Any help would be greatly appreciated.
As discussed offline, it's possible to use the qemu command line -option-rom option. Alternatively, one can place the rom in fwcfg directly via the -fw_cfg command line option. If you're writing qemu code the fw_cfg_add_file() function is also available.
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Kevin O'Connor